Method for checking conformity of layout splicing to design rules

Abstract

A method for checking the conformity of layout splicing to design rules comprises the steps that all cells (Cell) in a standard cell library are sequenced, and the cells are the first cell (Cell 1), the second cell (Cell 2),..., and the nth cell (Cell n) in sequence; determining inspection directions of all units in the standard unit library; determining a splicing layout mode of each unit, setting any unit Cell x and any unit Cell y in the unit library in three rows, and ensuring that splicing is formed in each inspection direction; the pairwise splicing layout of any unit in all the units in the unit library is determined in an automatic mode, and then whether splicing of all the units violates a design rule provided by a flow sheet manufacturer or not is checked. According to the method, the units which violate the design rule after splicing can be accurately positioned, whether splicing of all the units violates the design rule provided by a flow sheet manufacturer or not can be checked, the splicing relation between the units can be checked efficiently and rapidly, and subsequent design is facilitated.

Description

technical field [0001] The invention relates to the technical field of semiconductor manufacturing, in particular to a method for checking conformity of layout splicing to design rules. Background technique [0002] Design rule checking (DRC) verification of integrated circuit layout is an important link in integrated circuit design. After the layout design is completed, it is a step to check whether the layout conforms to the design rules. Typically, design rules such as minimum spacing rules, minimum inclusion coverage overlap size rules, and the like. Write the DRC rule file according to the layout rules provided by the tape-out manufacturer, and convert the layout file into a GDSII format file. Run the DRC inspection rule, and use the DRC rule file and the layout file in GDSII format as input files to get the output result file and inspection report. According to the result file, locate the wrong position of the layout and complete the modification, and finally ensure ...

AI Technical Summary

Problems solved by technology

[0006] The present invention is aimed at the fact that in the prior art, the unit splicing relationship check in the traditional unit library has certain uncertain factors, and all the splicing relationships cannot be checked out, and there is a certain risk that the standard unit library violates the tape-out during the design process. The design rules provided by the manufacturer make its products unable to be produced normally. Provide a method for checking the compliance of the layout splicing with the design rules.

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